Sign.



No. 725,300. PATENTED APR. 14, 1903. 0-. A. TYNDALL.

SIGN.

APPLIOATIOH FILED 1330.4, 1902.

H0 MODEL. 2'SHBETS-SHBET 1:

No. 725,300. PATENTED APR. 14, 1903. C. A. TYNDALL.

SIGN.

APPLICATION FILED D30. 4, 1902.

I0 MODEL. 7 2 SHEETS-SHEET 2.

UNITED STATES;

PATENT OFFICE.

CHARLES A. TYNDALL, OF TROY, NEW YORK, ASSIGNOR OF ONE-HALF TO CHARLESW. BRUDEN, OF UTICA, NEW YORK, AND PETER J. SMITH,

OF WALTHAM, MASSACHUSETTS.

SIGN.

SPECIFICATION forming part of Letters Patent No. 725,300, dated April14, 1903. Application filed December 4, 1902. Serial No. 133:912 (Nomodel.)

- To all whom it may concern.-

' Be it known that 1, CHARLES A. TYNDALL, a citizen of the United Statesof America, residing at Troy, in the county of Rensselaer 5 and State ofNew York, have invented certain new and useful Improvements in Signs, ofwhich the following is such a full, clear, and exact description as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, formingapart hereof.

This invention seeks to provide a sign which may be hung ontrolley-poles and which will be of a cheap and durable construction.This object is attained by the use of the device illustrated in theaccompanying drawings; and the invention consists in certain novelfeatures of the same, as will be hereinafter 2o first fully describedand then particularly pointed outin the claims.

In the drawings just mentioned, Figure 1 is a side elevation of atrolley-car with myimproved sign attached to the trolley-pole. Fig.

2 is an enlarged side elevation of the sign and the connections by whichit is secured to the trolley-pole. Fig. 3 is an elevation showing themanner of removing the card or sign-plate from the frame. Fig. 4 is anenlarged detail 0 section on thejli ne a; a; of Fig. 2, and Figs. 5

and 6 are enlarged detail views of the hang ers by which the sign-frameis secured to'th'e trolley-pole.

The car A and the trolley-pole B may be of any preferred style and formno part of my present invention.

In carrying out my invention I employ a trapezoidal frame 0 of any lightdurable material, preferably aluminium. This frame is- 40 groovedlongitudinally throughout its inner face, as shown at D, and its shorterend E is formed integral with its top and bottom. The longer end Fishinged at its lower extremity to the bottom of the frame, and its upperex- 5 tremity is adapted to engage and be held by a spring-latch G,projecting from the top of the frame. The sign-plate or card H istrapezoidal in form to correspond to the frame and is of such athicknessas to fit snugly in the in- .frame is turned downward to the positionshown in Fig. 3 and will then serve as a guideway to insure the properentrance of the card. After the card has been inserted the end is swungupward into its normal position and will be automatically engaged by thelatch G and held so as to prevent the accidental re moval of the card.On the bottom of the frame I provide a rubber or similar cushion I toserve as a buffer and prevent injury to the roof of the car when thetrolley-pole is lowered. To attach the sign to the trolleypole, I formon or secure rigidly to the top edge of the frame short posts orstandards J, having central concave recesses K and lateral flanges L attheir upper ends; Resting in the said recesses are sphericalenlargements M on the lower ends of hangers N, andplates O are fittedaround the han'gers over the enlargements and secured upon the flangesL, as clearly shown in Figs; 5 and 6. This construction forms auniversal joint, which per- 'mits the sign to move freely with the windin all directions, .so that there will be no undue strain on thetrolley-pole. The upper ends of the hangers are secured firmly betweenthe ends of straps or bands I, clamped around the trolley-pole.Encircling the pole between the same and the said straps or bands Iprovide rubber or other insulation Q to prevent having concave recessesand lateral flanges at their upper ends, hangers depending from thetrolley-pole and having enlarged lower ends resting in said recesses,and plates fitted on said hangers over said enlarged ends and secured tothe lateral flanges of the posts.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

CHARLES A. TYNDALL. \Vitnesses:

CLARIDA SANsvILLE, EUPHEMIA BoIssEMEAU.

